Title image (4 posts)

does anyone kwons if there is a hack or plugin or something to show a little image before the title of a post. Like this: http://i11.tinypic.com/5031s06.jpg that the image shows where now [News] stands, and maybe... if i write [News] or [Fun] or something else that wordpress automaticly turns it to a preset image... a little .gif image max. 20x20px i guess...